ASTM A 949/A 949M Standard Specification for Spray-Formed Seamless Ferritic/Austenitic Stainless Steel Pipe
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ASTM A 949/A 949M Document Information:
Title
Standard Specification for Spray-Formed Seamless Ferritic/Austenitic Stainless Steel Pipe
ASTM International
Publication Date:
Mar 10, 2001
Scope:
This specification covers spray-formed seamless ferritic/austenitic
stainless steel pipe intended
for general corrosive service, with particular emphasis on resistance
to stress corrosion cracking.
These steels are susceptible to embrittlement if used for prolonged
periods at elevated
temperatures.
Optional supplementary requirements are provided for pipe where a
greater degree of testing is
desired. These supplementary requirements call for additional tests to
be made and when desired,
one or more of these may be specified in the order.
Appendix X1 of this specification lists the dimensions of seamless
stainless steel pipe as shown in
ANSI B 36.19. Pipe having other dimensions may be furnished provided
such pipe complies with all
other requirements of this specification.
The values stated in either inch-pound units or SI units are to be
regarded separately as standard.
Within the text, the SI units are shown in brackets. The values stated
in each system are not exact
equivalents; therefore, each system must be used independently of the
other. Combining values from
the two systems may result in nonconformance with the specification.
The inch-pound units shall
apply unless the "M" designation of this specification is specified in
the order.
NOTE 1 - The dimensionless designator NPS (nominal pipe size) has been
substituted in this standard
for such traditional terms as "nominal diameter," "size," and "nominal
size."
Keywords:
- austenitic/ferritic
- pipe
- spray-formed
- stainless
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